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CMT71-64E HP-71b eprom module questions
04-28-2021, 12:02 PM
Post: #20
RE: CMT71-64E HP-71b eprom module questions
(04-28-2021 11:47 AM)KimH Wrote:  
(04-28-2021 09:41 AM)dmh Wrote:  So how many burners were made and are still in service I wonder?

Ok, so SHOWPORT shows the module is 64k but ROMTST says 'BAD ROM'. I've tried a few commands and they appear to work.

Could this be because it's the wrong test (the 32k test is loaded on a 64k module)?

I don't think there were many built - doubt anyone knows. AFAIK there are about 6-7 folks (all active in this forum) who has one which works.

I am almost certain the BAD comes from the size OR that the ROM checksum generated originally by PTGENC$, is wrong or never generated before the burn.

If you found the document, look at page 15

What you can try is the command - DISP PTSIZE$ (':PORT(n)') - 32k would give h10000 or double that with 64K

I couldn't find the document you mentioned but I ran the command above and got h20000 so it appears it is a 64k EPROM with the 32k test program.

Is there a way of manually loading the 64k test?
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RE: CMT71-64E HP-71b eprom module questions - dmh - 04-28-2021 12:02 PM

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